SBIR Phase II: RFID Tags for Cardiopulmonary Monitoring in Clinical Setting

这个小型企业创新研究(SBIR)第二阶段研究项目将开发一个带有传感器标签的RFID系统。本文的主要工作是设计和实现一种在微功率标签上包含模拟-数字混合电路的定制的CMOS集成电路。生物医学的应用是生命体征监测，包括心音和肺音。传感器标签在RFID环境中操作。利用微电子机械系统技术，在与RFID兼容的标签上制作了优化的传感器和CMOS电路。心音被表示为时变波形，并通过算法进行处理以进行特征提取。微功率设计在整个规划的系统中都使用了。带有一次性标签传感器的商业化产品可以取代目前使用直接连接传感器的丛林布线，或者对于无线吊舱来说，可以取代频繁更换电池的需要。该系统提供了一种非常方便、高性价比、能够长期使用、不干扰附近心脏起搏器的患者监护能力。易于使用使该系统成为医学生和专家的理想教学工具，同时将视觉波形和声音呈现给操作员。该系统将用于医院、诊所、医务室和家庭门诊患者。

This Small Business Innovation Reseach (SBIR) Phase II research project will develop an RFID system with sensor tags. This work focuses on design and implementation of a custom CMOS integrated circuit which contains hybrid analog-digital circuits on a micro-power tag. The biomedical application is vital signs monitoring including heart and lung sounds. The sensor tag operates within an RFID environment. Micro-electromechanical systems technology is used to fabricate an optimized sensor together with CMOS circuitry on the RFID-compatible tag. Heart sounds are presented as time-varying waveforms and processed algorithmically for feature extraction. Micro-power designs are used throughout the planned system. The commercialized product with disposable tag sensors can replace the jungle of wiring currently used with direct-wired sensors or, for wireless pods, the need to replace batteries frequently. The system provides a patient monitoring capability that is very convenient, highly-cost effective, capable of chronic use, and does not interfere with nearby heart pacers. The ease of application makes this system ideal as a teaching tool for medical students and specialists with both visual waveforms and sound presented to the operator simultaneously. The system will be used in hospitals, clinics, medical offices, and for outpatients in the home.